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Laser Single Cylinder Valve Timing.

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David Davis06/10/2014 06:41:50
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3762 forum posts
719 photos

Hi everybody! The trusty Laser 90 in the "works" Senior Telemaster is in need of an overhaul. I am going to fit a new bearings and a new piston ring.

I used to have a print-out giving detailed instructions on the valve timing, or perhaps more correctly, the cam timing of Laser engines. I'm blowed if I can find it now and I've trawled the internet to no avail.

Anybody able to help?

Braddock, VC06/10/2014 06:49:50
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1655 forum posts
82 photos

www.laserengines.co.uk cam timing is there.

Braddock, VC06/10/2014 07:34:42
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1655 forum posts
82 photos

www.laserengines.co.uk/Camtiming.htm

David Davis06/10/2014 08:55:45
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3762 forum posts
719 photos

Thank you Braddock.

Jon - Laser Engines06/10/2014 09:14:17
5513 forum posts
268 photos

There is also a thread on here called the laser appreciation society. I posted details of timing for both singles and twins

Engine Doctor06/10/2014 11:57:52
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2512 forum posts
39 photos

Hi If you set the cams "on the rock" at TDC then it will be fine . On the rock is when inlet is just opening and exhaust is just closing .

Hope it helps .

Stevo11/10/2014 11:44:05
2699 forum posts
419 photos

I'e assembled a few... follow the instructions and diagram as has been mentioned. I've never had a problem!

trebor29/05/2018 13:51:38
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1930 forum posts
216 photos
Posted by Braddock, VC on 06/10/2014 07:34:42:

www.laserengines.co.uk/Camtiming.htm

Have you tried this link.  http://www.laserengines.co.uk/Camtiming.htm crying any one got details of cam timing as I could not find it on the Laser site.

Edited By trebor on 29/05/2018 13:52:34

Martin Harris29/05/2018 14:30:46
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9351 forum posts
252 photos

If you use the Internet Wayback Machine or similar, you can often find deleted website information such as this: **LINK**

Hope it's useful!

Jon - Laser Engines29/05/2018 14:45:29
5513 forum posts
268 photos

good grief that old site was awful.

For anyone who wishes to remove their cams please take a photo of them before you remove them from the engine. Its good practice and will make refitting a doddle

trebor29/05/2018 14:56:16
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1930 forum posts
216 photos
Posted by Martin Harris on 29/05/2018 14:30:46:

If you use the Internet Wayback Machine or similar, you can often find deleted website information such as this: **LINK**

Hope it's useful!

All I get is a Timed out notice.

Geoff S29/05/2018 15:32:40
3669 forum posts
26 photos

Just take a photo of the cam positions before you remove them. That's what I did earlier this year when I overhauled (ie cleaned and fitted new bearings) an old Laser 62. Photographing stuff before taking it apart is one of the boons of digital photography.

Geoff

Martin Harris29/05/2018 15:33:03
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9351 forum posts
252 photos

Odd - still working for me - try copying/pasting http://web.archive.org/web/20130726222157/http://laserengines.co.uk/Camtiming.htm

Edited By Martin Harris on 29/05/2018 15:33:27

trebor29/05/2018 16:04:32
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1930 forum posts
216 photos

Tried that, still no good. Took a screen shot but its a PNG file and I dont now how you can change it to jpeg to load on here. sad We need a banghead smiley.

trebor29/05/2018 16:15:00
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1930 forum posts
216 photos

Bingo.

2018-05-29.jpg

If I click on the blue line it goes to a SKY website, ,if I click on the bottom one it goes nowhere disgust

Martin Harris29/05/2018 16:16:56
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9351 forum posts
252 photos

Try a different browser? Here's a screenshot of the relevant part of the page:

capture.jpg

trebor29/05/2018 16:32:04
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1930 forum posts
216 photos

Thanks mine just comes up with network problems connecting to host whatever that means, I hate computers.

trebor30/05/2018 13:41:35
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1930 forum posts
216 photos

Ok, Which one is correct Left or Right ?

img_2938.jpg

Martin Harris30/05/2018 13:52:26
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9351 forum posts
252 photos

Going by ED's guidance, the right hand one looks correct (I assume they are both at TDC) but the best way to check is with a degree disc on the crankshaft and using the info from the old Laser site I posted - but Jon might be able to confirm by eye?

trebor30/05/2018 15:13:27
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1930 forum posts
216 photos

I think you are right, Ill soon find out laugh

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